No proppushing at all?

[Narc]

Yes, it does say this although in the vehicle rule section it also says:

When your car is stuck, call an admin. You can gently try to move it with a prop if required. When your car is upside down you should use /flip to flip it.

Then I think that exact rule (no prop pushing) should be rewritten. It says at all, which apparently isn't the case.

It's easy to understand that there is an exception, when it's written.